Overview

• Utah Mammoth filed a declaratory judgment suit on August 1 in U.S. District Court in Utah, naming SEG Hockey and related entities as plaintiffs.
• The complaint asks the court to declare that the team’s adoption of the Mammoth name does not infringe on any rights claimed by Mammoth Hockey LLC.
• Court filings highlight that Mammoth Hockey publicly backed the Mammoth name during the year-long fan voting and proposed a collaboration before reversing its position in June 2025.
• Utah Mammoth notes that Mammoth Hockey has never registered the “Mammoth” trademark federally and relies solely on common law rights.
• Mammoth Hockey contends that the overlapping branding could cause consumer confusion and harm its high-end equipment-bag business, and no settlement has been reached.